Did you know that growing one orange requires 13.8 gallons of water? Next time you crunch into an almond, you’ll consume the result of one gallon. California grows both: a result, in part, of the Colorado River Compact. Edward Spang of the University of California Davis, as well as colleagues including David H. Marks of MIT, predict competition for water use will increase in the water-energy-food nexus. Spang developed a water consumption for energy production (WCEP) indicator, comparing the use of water for different forms of energy in over 150 countries. Fossil fuels and biofuels require the most water; wind is less thirsty. The United Nations cites the World Water Development Report: “If water, energy, and food security are to be simultaneously achieved, decision-makers, including those responsible for only a single sector, need to consider broader influences and cross-sectoral impacts. A nexus approach is needed.”
For more: Spang, Edward. “A Thirst for Power: A Global Analysis of Water Consumption for Energy Production.” GWF Discussion Paper 1246. Global Water Forum, Canberra, Australia. http://www.globalwaterforum.org/2012/10/23/a-thirst-for-power-a-global-analysis-of-water-consmption-for-energy-production/and also see: http://cwee.ucdavis.edu/wp-content/uploads/2013/10/10-25-2013-ThirstforPower_Final.pdf
“Multiple metrics for quantifying the intensity of water consumption of energy production.” E.S. Spang, W.R. Moomaw, K.S. Gallagher, P. H. Kirshen, and D.H. Marks. 8 October 2014. Environmental Research Letters, Volume 9, Number 10. http://iopscience.iop.org/article/10.1088/1748-9326/9/10/105003/meta
Ahuja, Satinder, Editor. Food, Energy, and Water. Elsevier 2015. https://www.elsevier.com/books/food-energy-and-water/ahuja/978-0-12-800211-7
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